Revolving door



Jan. 30, 1951 H. G, E, NORM 2,539,750

REVOLVING DOOR Filed Aug. 25, 1946 v v3 sheets-sheet 1 25 V 4453743-/3-a395254'0 2 j' 2 47 l 46 i' lfm/'H z /l '35 w26 4 1r J ,f l /5 Jan. 30, 1951 I H. G. E. NoRDlN v 2,539,750

REvoLvING Doon Filed Aug. 25, 1946 3 Sheets-Sheet 2 Patented Jan. 30, 1951 STATES PATENT OFFICE .RnvoLviNc 'nooit HolgerG.. -N ordin,fChica'go-, sill.

.Application August y23, 19216, serial No. '692;675

(C1. V20a-18) A stillffurther "object is to .provide a revolving door 'that is readily assembled "and installed, one wherein all parts are easy of access for repair, 'rep cement, lubrication *or'cleaning when'heces- Sary.

Other objects, novel features uand advantages oi arrangement, construction and designr` comprehnd'ed by "the invention are hereinafter 'more fully pointed but'ormade apparent from 'the fol-l lowing description of 'a 'preferred 'embodiment as illustrated iin the accompanying drawings `wherein like reference characters denote corresponding parts throughout.

I n the drawings:

Fig. 1 'is'a View Vpartly 'in side elevation, partly in section, and with certain vparts broken laway, i of "a single locking unit of one of the rfour wings.`

oi a `revolving door constructed in "accordance with the invention.

Fig. 2i's avertcalsectional view through Fig. l

l on the line 2-2.

Fig. 3 is an 'enlarged Vfragmentary sectional view fof Fig. 1 :showing Ia portion bf lthe release mechanism.

Fig. 4 isan horizontal crosssectional View, en-

larged, through Fig. 1 on the line -4 and showing 'a portion of the center post structure.

Fig. `5 'isa top plan view-of the top and bottom -door yokesshowing the wings and doors in inoperative position.

Fig. 6 isa top-pian vieu/'ofthe door 'yoke ern- 'plyed and,

Fig. 7 is a View partly in elevation, partly in section and with parts broken away, of one wing with the door proper shown in dotted lines.

The reference numeral I denotes a central tubular shaft formed with an angular slot 2 near its lower end, said end resting upon and being secured to a tubular stub shaft 3, the opposite end of shaft I receiving and being secured to another stub tubular shaft 4. Adjustably received in the shaft I previous to its assembly with stub shafts 3, 4 is the rod 5 extending below the lower end of stub shaft 3 and normally into the hollow flanged base block 6 arranged in the socket 'I in floor 80, the bore in said block 6 being in line with s 2 that oi the stub "shaft 3. 'The said rod f5 extends Athrough and `beyond 'the upper end of stub 'shaft 4 and `has fast thereupon a flanged 4collar 8 operat'ively 'and 'freely received in the ball bearing `9 secured in the track i' built in the struc-ture served in conventional manner. Clearance is provided 'above'the upper V`er'ld of rod 5 to permit it to 'be raised by means Aof' its handle `I`I extend ing 'but 'th-rough slot l2 in shaft I a distance to 'effect thewitndrawal "or the lower end oi said rod 5 `Tirorn the 'said block 6, said handle being screwed into a threaded socket in rod 5 ai'ter same is l0- i 'cated in 'shaft fl Vand movable from end to end o'f .said slotiz.

Each Jstub 'shaft is provided with a plurality, preferably four., vertical ribs `I 2 spaced ninety'de'- .grecs apart and received Aat 'the outer end oi `each shafti's a'spi'der 13er I'II each ,provided with four 'radial arms 'I5 extending outwardly, -ninety degrecs lapartjthe `ends 'I'I oi upper land lower arms being bent toward each other and each end forined with aperforation I'I, vsaid vspiders being recessed complimentary to 'said ribs I2 to receivesaine. y

'The ripper face of each spider I3, I4 is grooved 'to f orm atrack I'8 'composed'ofa'plurality of `connected segments, four in "number and of 'equal size, the .points -oi connection of said segments beingfin the ,planes of the said arms f5, round pegs I9 ofthe saine diameter as said ribs I2 'and terminating at an elevation 'common therewith Vare disposed centrally di said-segments and therefore `eql'iidistant "from each other 'and `each peg -a common distance from the two .ribs 'adjacent 1erally with semi-circular notches T24, 25, '26, the

notch -24 of each :head Vbeing in the plane of 'its arm and thenotches r25, upon opposite sides thereof and equidistant from notch 2li, said notches being formed complimentary to said ribs and pegs I2, I9; the distance between notches 24 and 25 or 26 being the Same as that between a rib I2 and its adjacent pegs and adapted for engagement therewith singly as said head is moved laterally as clearly shown in Fig. 5.

The said span arms 23 when engaged with the ribs I2 are parallel with the said arms i5 and immediately adjacent thereto and extend materially therebeyond and are connected together, said top span arms to the corresponding span arms at the base by the brace bars 21. Also connecting each span arm 23, top and bottom, to brace bars 21 are the top and bottom escutcheon plates 28, 29, said pairs of plates being connected to each other also by the auxiliary brace bars 30 spaced inwardly from brace bars 21, said pairs of plates also receiving and supporting the wings 3| of the door. The escutcheon plates are formed with elongated perforations 32 extending from their inner ends outwardly marginally and terminating in enlarged angularly disposed portions 33 in the plane of arms I to provide clearance therefor.

The members of each pair of escutcheon plates receive therebetween a longitudinally extending angular frame having the inner end 34 formed with a vertical recess 35 complimentary to and freely receiving a rib I2 of the center post I thus forming a hinge; a base 36 from which perforate partitions 3l, 38 rise and an outer end 39 terminating in the toe 40, said partitions 3l, 38 operatively receiving a sleeved bolt 4I having a head 42 extending slightly beyond partition 39 for engagement, in projected position, with the pern forate portion I1 of the downturned end I6 of arm I5, an expansion coil spring 43 about said bolt abutting said head and a nut 44 in partition 3l, said bolt being connected by an angular cou-- pling member 45 to a bell-crank-lever 46 fulcrumed upon pin 41 connecting said escutcheon plates, said bell-crank-lever pivotally engaging an elongated block 48 slidable vertically in the frame base 36, said block being connected by pitman 49 to a similar structure provided in the opposed pair of escutcheon plates. Arranged in the frame base 36 in a recess 50 is an expansion coil spring 5I abutting a plug 52 and dog 58 having a tooth 59 that may be engaged with a. notch 60 in block 48 to retain said block in raised position thus through the medium of top and bottom levers 46 and connections, including springs 43 under compression, retaining the bolts 4I out of engagement with the ends I6 of arms I5. Should the door become locked in stationary position, however, with one or more persons confined therein one or more wings may be collapsed by manual movement of the handle 6l of dog 58 extending through an elongated slot 62 and by means of which said dog may be retracted to release block 43 permitting expansion of springs 43 and seating the heads of bolts 4I in perforations I I thus affording a passageway through the locked or defective door.

The structure is now, as shown in Figs. 1 and 4, in inoperative position. Pressure now applied to this wing 3l will move same with the connected` escutcheon plates and direct connections laterally away from arm I5 and connections without rotation of shaft I but aording a passageway through the door. Continued application of force to this wing will cause it to contact the adjacent wing in its path of movement and cause collapse of same through engagement with one of the levers 63, one upon each side of said escutcheon plates,

4 fulcrumed to said plates upon opposite sides of said block 48, the inner ends 64 of said levers engaging the recessed portions 65 of said blocks for raising same as said levers are moved toward said plates until notch 60 of block 48 is engaged by dog 58. The normal position of the doors is shown in Fig. 7 with bolts 4I engaging perforations I1 of the downturned ends I6 of arms I5. Manual operation of one or both levers 63, moving same toward an escutcheon plate will also break the operative connection between Wings 3l and shaft I and when the upper block 48 is in line with tooth 59 of dog 58 the spring 5I will move same into supporting engagement with said block. Re-assembly is effected by manual movement of handle 6I of said dog through slot 62 to disengage said dog from said block whereupon spring 43 will, after wing 3| and connected escutcheon plates have been manually moved into alignment with an arm I5, force bolt 4I again into arm perforation I1. To removethe door the central shaft and connections are'raised to clear the lower end of rod 5 from block 6 and the leaves and escutcheon plates disconnected from arms I5 and the latter removed from shaft I.

What is claimed is:

In a revolving door, a central rotary shaft, spiders fast to the ends of said shaft, span arms afljustably associated with said spiders, wings carried by said span arms, escutcheon plates connecting and carried by said span arms and wings, bolts carrried by said escutcheon plates yieldingly engaging said spiders, adjustable notched blocks associated with said escutcheon plates, connection between said blocks and bolts, means for re leasablyretaining said blocks in inoperative position with said bolts retracted with respect to span arms, said means including spring-pressed toothed dogs engaging the notches in said adjustable blocks, handles for said dogs, and levers carried by said escutcheon plates and fulcrumed thereto, said levers engaging said blocks for raising same when said levers are moved in one di rection, the levers of each escutcheon plate disposed in the path of movement of either adjacent escutcheon plate when same is displaced from normal position under pressure, said levers adapted also for manual movement.

I-IOLGER G. E. NORDIN.

REFERENCES CITED The following references are of record in the lle of this patent:

UNITED STATES PATENTS Peremi et al May 6, 1941 

